首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   36215篇
  免费   1387篇
  国内免费   11篇
  2018年   538篇
  2017年   592篇
  2016年   606篇
  2015年   446篇
  2014年   584篇
  2013年   3074篇
  2012年   1002篇
  2011年   1079篇
  2010年   714篇
  2009年   687篇
  2008年   1060篇
  2007年   960篇
  2006年   921篇
  2005年   856篇
  2004年   857篇
  2003年   848篇
  2002年   889篇
  2001年   832篇
  2000年   805篇
  1999年   683篇
  1998年   444篇
  1997年   457篇
  1996年   421篇
  1995年   414篇
  1992年   642篇
  1991年   572篇
  1990年   578篇
  1989年   529篇
  1988年   546篇
  1987年   520篇
  1986年   549篇
  1985年   561篇
  1984年   545篇
  1983年   506篇
  1982年   418篇
  1981年   423篇
  1979年   525篇
  1978年   486篇
  1977年   423篇
  1976年   442篇
  1975年   466篇
  1974年   570篇
  1973年   556篇
  1972年   410篇
  1971年   422篇
  1970年   393篇
  1969年   420篇
  1968年   496篇
  1967年   449篇
  1966年   461篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
951.
Growth systematically changes the body proportions of both humans and animals so that the ratio of head height to body height decreases with age. Prior studies have demonstrated that body proportions provide effective information for age perception. To test the proposal that illustrators incorporate this information into their drawings, measurements were made of the head and body heights of 100 pairs of animals appearing in children’s picture books. In 93 pairs, the animal intended to be perceived as older had a smaller head-to-body ratio than did the younger animal. Ratings collected for 25 of these pairs showed that both perceived age and cuteness are significantly correlated with body proportions. The magnitudes of the correlations were only modest, suggesting that other aspects of the drawings influenced perceived age and cuteness. In addition, observers reported that body proportions are only one of a variety of factors influencing age and cuteness perception. As has been found in other studies, perceived age and cuteness were negatively correlated.  相似文献   
952.
Responses to recently ignored information may be slower or less accurate than responses to information not recently encountered. Such negative priming effects imply that the mechanism of selective attention operates on unattended, as well as attended, information. In the present experiment, subjects judged the second and fourth letters of five-letter strings (e.g., BABAB) as “same” or “different.” Responses were slower when a target letter was identical to the distractors presented in the immediately preceding trial. This effect did not depend on which response was required on the current or preceding trial. The results suggest that ignored information is functionally disconnected from the response system as a whole, rather than from a specific response.  相似文献   
953.
Hardware is described that permits bidirectional transfer of data between the Commodore 64 and an IBM-compatible PC. Commercial terminal programs can be used to transmit data. The hardware, which can be constructed for less than $15, opens up several opportunities for making good use of the cost-effective C64 computer.  相似文献   
954.
955.
956.
Despite the growing popularity of watching oneself on videotape, little systematic research has been conducted determine viewers' affective responses to video replay. This study addresses the question: what affective responses do women have when they view themselves for the first time on unedited videotape, in comparison to their responses when they view a peer or nature scenes on videotape? Affective responses were measured in three ways: self-report, physiological, and behavioral. Subjects who viewed themselves reported more negative feelings and anxiety, and smiled more frequently than subjects who watched another person or nature scenes on video. Subjects with high private self-consciousness had higher mean arterial blood pressures when viewing themselves than did subjects with low private self-consciousness. Overall, the implications for seeing oneself on video point to potential embarrassment but generally moderate effects.  相似文献   
957.
Romanians suffered incredible deprivations of every sort during the decades of Communist dictatorship. Most of the country’s 1,000 psychiatrists, and most of their patients, were victimized by the political system. A few psychiatrists actively engaged in practices amounting to torture. Many, however, became willing or unwilling participants in the political abuse of their profession. Such political abuses were fostered by abusive legislation and abusive law enforcement by the secret police. Abuses included: mass detentions in psychiatric hospitals of dissidents and political undesirables; abusive interpretation of the laws in detaining persons not suffering from mental illness; false, politically motivated diagnoses and treatment; and detention in secret facilities. While there are honest efforts to come to grips with the past, to compensate victims of psychiatric abuse, and to institute proceedings against abusers, there is also much resistance to reform. Reform-minded Romanian psychiatrists deserve the support of their western colleagues in the effort to restore Romanian psychiatry. In particular, professional colleagues all over the world are asked to comment on the draft law currently pending before the Romanian parliament, which is intended to restore the rule of law to the practice of psychiatry in Romania. Report of a consultative mission to Bucharest, on behalf of the Geneva Initiave on Psychiatry, 7 June to 12 June 1992, by Nanci Adler, Historian-Sovietologist, Geneva Initiative on Psychiatry, Amsterdam, The Netherlands; G.O.W. Mueller, Distinguished Professor of Criminal Justice, Rutgers — The State University of New Jersey, U.S.A.; Mohammed Ayat, Professor of Criminology and Penal Law, Université de Fes, Faculté des Sciences Juridiques, Economiques et Sociales, FEs, Morocco. The Geneva Initiative on Psychiatry is a nongovernmental, nonprofit organization, dedicated to the introduction and preservation of ethical practices in the psychiatric profession, in accordance with medical ethics, the Universal Declaration of Human Rights, and U.N. standards and guidelines. Headquartered in Amsterdam, the organization is currently providing technical and financial assistance to the newly established free, independent, democratic psychiatric associations in Russia, Ukraine, Romania, and other countries. The General Secretary of the organization is Robert van Voren; the board is composed of professionals from some twenty countries. This article was based on meetings at governmental and parliamentary offices, nongovernmental organizations, and embassies as well psychiatric institutions with, among others, the following persons: Dr. Lucian Alexandrescu, V-P Radu Ciuceanu, Mr. Comsa, Proc. Gen’l. Ulpiu Cereceanu, Mr. Nistor Cristea, Mr. Dinu Ianculescu, Prof. Dr. George Ionescu, Miss Cristina Luzoscu, Dr. Zaharia Nicolae, Mr. Iancu Petrescu, Dr. Dan Prelipcianu, Min. Mircea Ionescu-Quintus, Dr. Aurel Romila, Av. Nicolae Stefanescu-Draganesti, Dir. Dr. Tomescu, Dr. Alexandru Trifan, Dr. Valeriu Tuculescu, and numerous victims, diplomats, and Romanian citizens.  相似文献   
958.
A review of the literature suggests that a paucity of information exists regarding how culture-specific issues such as being both Black and gifted influence the psychological needs and personality development of gifted Black students. Stellar attempts, however, are currently underway to develop theories and perspectives of racial identity development among Black students. These theories and perspectives are discussed in an attempt to understand and address the psychological and social needs of gifted Black students.  相似文献   
959.
In this study the authors investigated the relationship between the Male Role Norm Scales (MRNS; Thompson & Pleck, 1987) and gender-related attitudes and behaviors in a sample of 367 male counselors drawn from American Counseling Association (ACA), formerly the American Association for Counseling and Development (AACD), members. Results indicated that this group of men did not, in general, endorse traditional male roles as measured by the MRNS. When a degree of affiliation with these roles was found, however, it was predictive of violence proneness, intimacy style, and degree of perceived similarity to father. Implications for training and counseling are discussed.  相似文献   
960.
The authors studied employment and roles of master's-level counselors in employee assistance programs (EAPs) and the services offered by different types of EAP organizations. The study focused on programs, workshops and seminars: assessment; counseling; consultation; and evaluation and marketing services offered by EAPs. Master's-level counselors were found to be similar to those with Master's of Social Work (MSW) degrees in employment rate and percentage of EAP staff. Both groups were the most frequently employed and constitute the greatest percentage of the professional mental health staff in EAPs. Also, counselors were found to be involved in all of the service areas studied within each type of EAP. Differences in counselors' roles among EAP types are discussed.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号